Continuation Sheets_Amendment 4.pdf
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- Solicitation number
- 20312361
About this file
This document is an Amendment (Amendment 4) to a federal contract solicitation for a comprehensive environmental remediation and waterfront recapitalization project at Base Seattle. The amendment includes multiple technical modifications and clarifications, specifically addressing drawing changes, specification updates, and responses to potential proposers' questions. Key changes include updates to electrical equipment specifications, gangway length adjustments, circuit breaker modifications, power mound configurations, and clarifications on existing site conditions such as air compressor demolition and concrete pile specifications.
The amendment comprehensively addresses potential proposer inquiries across multiple technical domains, including electrical systems, structural elements, site demolition, and environmental considerations. Notable clarifications include confirming dredging can occur 24/7 with prior approval, specifying sheet pile requirements, addressing PCB sealant quantities, and providing details on existing site infrastructure like concrete colby and shotcrete pile dimensions. The document systematically resolves technical ambiguities to provide potential contractors with more precise project understanding and requirements.
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70Z05025R43000001
SOLICITATION NO. 70Z05025R43000001 IS AMENDED AS FOLLOWS:
Enclosed documents:
• New version of Specification Section 01 50 00- Temporary Construction Facilities and
Controls.
Task Order Announcement
Revised TOA is issued with a correction to the evaluation factors, an additional clause, and instructions regarding Organizational Conflicts of Interest (OCI)
Drawing Changes:
SS150: Update gangway length to 80 feet.
SD142: Update Note 4; replace reference to sheets TW106-112 with CU441, CU442, FM441, EP141, EP142, EP541, and EP641.
E-506: Add details for 30/60A and 20A/120V receptacles as GFCI, NEMA 3R weatherproof enclosures.
E-508: Update circuit breaker size on Detail A4 to 125A; label the circuit breaker.
E-602: Add dashed line around equipment to be included in the enclosure for Power Pedestal 4.
E-504, Detail F4: Update to show 5-gang power mound.
E-603/E-604: Add legend to clarify dashed line types for existing equipment vs. enclosures.
E-601: Denote PM-36A (8 gang power mound) as relocated.
AD401: Update Note P3 to state "Existing air compressor to be demolished in full."
SC520, Detail E8: Provide interlock length (approx. 1.28 inches).
A2/E505: Add reference to Panel FB.
Specification Changes:
01 50 00- New version of Temporary Construction Facilities and Controls, included in this
Amendment.
26 27 29: Change section 2.23 to specify stainless steel instead of galvanized steel.
26 11 16: Add motor-operated circuit breaker.
26 24 13: Change Section 2.2.2.1(d) to SS316.
THE FOLLOWING QUESTIONS WERE RECEIVED IN RESPONSE TO THE
SOLICITATION:
PPI #39: Drawing CD 103 identifies a section of Knee Wall on the east end of Building 3 to be demolished (drawing grids E-4 and F-5). On the same drawing other areas of the knee wall are shown to be “Existing, Protect-in-Place.” There is no clear line of demarcation between the portions to be removed and the portions to remain. Please advise.
Answer: Plan South removal limit of the existing Knee Wall is where the Saw Cut Line
("SAW" line style) begins.
PPI #43: On Drawing SS150 Section F1 “Gangway Plan” the new gangway is shown dimensionally as 78-feet-long. In the Elevation View C1 on the same drawing the gangway is labelled as “80’ Gangway.” Please confirm the desired length of the new gangway.
Answer: The new gangway length shall be 80 ft. Drawings will be updated to reflect this.
PPI #44: Note 4 on Drawing SD142 “Floating Dock Structural Demolition Plan” states
(paraphrasing here) that utility connection details are to be found on Drawings TW106 thru
TW112. It does not appear that these drawings have been provided in the current set of documents. Please advise.
Answer: This cross-reference is incorrect. This note will be updated; the reference to
Sheets TW106-112 will be replaced with Sheets CU441, CU 442, FM441, EP141, EP142, EP
541, and EP 641.
PPI #46: On Drawings CD108 and CD109 you show fencing required but no detail of the fence.
Are we to assume that the same detail as shown on CP502 applies here? This detail shows chain link fence with concrete barriers.
Answer: CD108 & CD109 show existing fence to be removed. For Bidding purposes assume existing fence to be removed is standard Unified Facilities Criteria (UFC) security chain link fence installed in pavement with barbed wire on top.
PPI #49: Will the contractor employees require a TWIC card (Transportation Worker
Identification Credential) to access the project site location?
Answer: No, a TWIC will not be required to access the project site. However Base Seattle
Uses RapidGate for contractor access, see 01 14 00 Paragraph 1.4.1.2 for base access requirements.
PPI #57: Specification 26 27 29 seems to indicate that conduit strut straps are required to be stainless steel, but support strut channel, hardware, and threaded rod is only required to be galvanized steel. Please confirm that this is correct, and the intent of the design.
Answer: Will consolidate and change section 2.23 in Spec 26 27 29 to be stainless steel instead of galvanized steel.
PPI #61: Please confirm that expected permit costs are to be carried in the contractor's bids.
Answer: Confirmed.
PPI #62: The sheet pile identified in the temp. toe wall to Ex. toe wall connection and future bulkhead wall is a NZ28 section. The NZ28 is a proprietary hot rolled section... (rest of question about sheet pile substitution)
Answer: The sheet pile section for the new Pier 36B bulkhead wall was not specified. For both Pier 36B new bulkhead wall and Pier 36A temporary toe wall, Sheet S-003 includes minimum requirements for the contractor-selected sheet pile section, such as the min.
elastic section modulus and min. flange and web thicknesses.
PPI #66: Notes 11 and 12 on ES101 indicate new receptacles, but the desired NEMA
Rating/Configuration of these receptacles is not clear. Please provide the desired NEMA
Rating/Configuration of these receptacles.
Answer: On sheet E-506, the receptacle details will call the 30/60A and 20A/120V receptacles as GFCI, NEMA 3R weatherproof enclosures.
PPI #67: A single 100A Enclosed Circuit Breaker (No size or equipment ID indicated) is shown on Detail A4, E-508 which serves Cable Tag ID STC2 (Power Pedestal 4)... (rest of question about circuit breaker and enclosure)
Answer: The circuit breaker size on Detail A4, E-508 will be updated to represent a 125A circuit breaker. A dashed line will be incorporated on E-602 for power pedestal 4 to represent that the equipment after the transformer secondary will be included in the power pedestal.
PPI #68: Please confirm that all electrical equipment shown inside the boathouse should be as specified in Spec 26 20 00, and all equipment outside the boathouse should be as specified in
Spec 26 27 29.
Answer: All electrical equipment inside the boathouse is specified in Spec 26 20 00. All other equipment on the floating docks is specified in Spec 26 27 29.
PPI #69: E-504, Detail F4 shows 6-gang power mound. The other electrical plans describe a 5-gang power mound. Please indicate which is correct and update the plans.
Answer: The details will be updated to consistently represent a 5-Gang power mound.
PPI #72: Demand meter shown on primary of transformer, but spec and sheets E602/E603 indicates KWH meter should be in LV switchboard. Please confirm desired location.
Answer: There will be a kilowatt-hour demand meter at the primary of the transformer (E-
606) and a solid-state multifunction meter at each secondary feeder.
PPI #74: Plans E-603/E-604: Substation feeder breakers show boxed "M" connected. Note 6 says shunt trip only and specs indicated manual operation. Is motor operator desired for remote closing of breaker also? If not what does M denote?
Answer: Sheet E-001 denotes the "M" as motor operator. Will add the motor-operated circuit breaker into specification 26 11 16.
PPI #75: Plans E-603/E-604: General Sheet Note 1 denotes that dashed lines indicate existing, continuous line indicates new. All subs and power mounds shown in dashed lines. Are these in scope?
Answer: Screen & Dashed lines indicate existing, substation and power mounds have a different dashed linetype to represent equipment enclosure. Will add legend to emphasize these linetypes.
PPI #76: Plans E-603/E-604: Substation feeder breakers show SSPM on load side of breaker, but ahead of double lug connection. Should double lug be an external 3 way junction since CT's need to sit on single cable as drawn?
Answer: External 3-way junction is not required.
PPI #77: Plans E-601: PM-36A (8 gang power mound) is not denoted as relocated. Should this be included?
Answer: Will denote power mound as relocated as well.
PPI #79: 26 24 13 (2.2.2.1) states that switchboards should be SS304 or SS304L. 26 11 16
(2.2.3.1) states that outgoing section enclosure is in accordance with incoming section enclosure
(2.2.1.1) which calls out SS316. What type of SS should the LV switchboard be built with?
Answer: Section 2.2.2.1 (d) in Spec 26 24 13 will be changed to SS316.
PPI #97: AD401 note P3 indicates we are to relocate existing air compressor. Note 6 / PB100 is not clear if this is a new compressor or the relocated existing compressor. Please advise.
Answer: The air compressor is to be new per sheet PB100 and scheduled equipment on
PB001. Note P3 on AD401 will be updated to say “Existing air compressor to be demolished in full”.
PPI #103: Please provide geotechnical report for soils under building 3. Are these to be assumed contaminated?
Answer: The CG does not have any reports on contaminated soil below Building 3, contractors should follow specification procedures for if they encountered a suspected hazardous material not previously identified in the contract documents.
PPI #107: On Plan Sheet H-100 under lead-based paint Note 6 states “All loose LBP shall be removed from the inside and outside of the buildings." Is it required to scrape off all loose LBP from inside and outside of building 3 prior to demolition?
Answer: No, paint needs to be stabilized prior to demolition.
PPI #110: Keynote A4 on Drawing AB200 shows translucent wall panels on the boathouse.
These are not described anywhere in the specifications. Please provide a specification with more information for these panels.
Answer: Translucent panel profile and rating criteria are shown on drawing SB001.
PPI #119: Can dredging occur 24 hours per day, 7 days per week?
Answer: Yes, if it is approved by the USCG Contracting Officer or their designated representative in advance, in accordance with Specification 01 14 00.
PPI #124: Base Item 2F: There are 5 Armor Stone “Types.”... (rest of question about quantities of each type)
Answer: Yes, will provide a quantity table for each rock armor type. (See provided table in original data)
PPI #125: Base Item 2G: There are 5 Granulated Filter Layer “Types.”... (rest of question about quantities of each type)
Answer: Yes, will provide a quantity table for each rock filter type. (See provided table in original data)
PPI #130: CN300, note 10 and CH102 reference existing stone to be temporarily removed and stockpiled for reuse... (rest of question about existing stone)
Answer: The location and if existing stone can be used will be determined in the construction phase. The existing stones need to be inspected and be tested if necessary before be approved by the Contracting Officer or their designated representative.
PPI #140: Drawings SC520 detail E8 Shows the pipe pile interlock connection but does not provide the length. Please provide the interlock length required.
Answer: The length is approx. 1.28 inches. Detail will be updated.
PPI #141: In the regulated building materials assessment report it shows that PCB sample 3-
PCB4-01 came back positive for PCB’s at 13 PPM... (rest of question about PCB sealant)
Answer: Sealant is applied to corrugated metal siding and quantity is approx 75 linear feet.
PPI #144: Electrical/Steel: Detail A2/E505 calls for installation of gaskets... (rest of question about gasket installation)
Answer: Reference will be made to Panel FB in detail A2/E505.
PPI #152: Existing concrete colby pile size: What is the diameter of the existing concrete colby piles?
Answer: As-built files indicate colby piles are 12" in diameter.
PPI #153: Existing concrete shotcrete pile size: What is the diameter of the existing concrete shotcrete piles?
Answer: As-built files indicate shotcrete encased piles are 12" in diameter. Piles are likely
12" timber encased in shotcrete.
PPI #154: Wrapped Stud Pile Material: Requesting the material that the wrapped stud pile is made of, is it concrete, steel, timber or something else?
Answer: As-built files indicate wrapped stub piles are timber. The stub splice consists of corrugated metal formwork and reinforced concrete.
PPI #157: Type of sheets for bulkhead: We are not able to determine from the specifications or the plans what sheets to use for the bulkhead. Can you specify what type of sheets we are to use?
Answer: The sheet pile section for the new Pier 36B bulkhead wall was not specified. For both Pier 36B new bulkhead wall and Pier 36A temporary toe wall, Sheet S-003 includes minimum requirements for the contractor-selected sheet pile section, such as the min.
elastic section modulus and min. flange and web thicknesses.
THE ATTACHED LIST OF QUESTIONS WERE RECEIVED IN RESPONSE TO THE
SOLICITATION, THEY ARE INCLUDED HERE WITH THE RESPONSES:
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